A kind of steel-aluminum composite material mirror polishing cleaning agent and preparation method thereof

Abstract

The present invention discloses a mirror polishing cleaning agent for steel-aluminum composite materials and a preparation method thereof, and relates to the technical field of cleaning agents. The cleaning agent of the present invention comprises the following raw materials in weight percentage: 10-20% organic acid, 10-25% surfactant, 7-10% chelating agent, 3-5% corrosion inhibitor, 2-5% antistatic adsorbent, 1-2% organic solvent, and the balance is water. The cleaning agent prepared by the present invention effectively reduces the adsorption force between the grinding fluid and the metal surface during cleaning, and utilizes the acidity, emulsification and chelating properties of the cleaning agent to remove grinding fluids such as silicon oxide and aluminum oxide, while not causing corrosion to the mirror appearance after metal grinding. The cleaning agent prepared by the present invention has stable performance, strong decontamination and cleaning ability, does not corrode steel-aluminum composite material workpieces, and can effectively improve product quality and production requirements. The present invention is environmentally friendly, does not contain heavy metals, toxic and hazardous substances, and is harmless to the human body.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning agents, and in particular to a cleaning agent for mirror grinding of steel-aluminum composite materials and a preparation method thereof. Background Art

[0002] With the rapid development of mirror polishing technology in recent years, mobile phone accessories, tableware, glasses, watches, and jewelry all require this polishing process to enhance their brightness and smoothness. During polishing, the fine particle size and strong adsorption of aluminum oxide and silicon oxide polishing fluids, combined with the external forces of polishing, cause the polishing fluid to adhere to the metal surface, making it difficult to clean steel-aluminum composite surfaces. Furthermore, due to the properties of steel-aluminum composites, even slightly strong acids or bases can corrode them, affecting the finished product's appearance.

[0003] Chinese patent application number CN110923727A discloses a grinding liquid cleaning agent and a preparation method thereof, which specifically discloses that the agent includes the following components: 15-25 parts of aminosulfonic acid, 15-25 parts of a surfactant, 10-15 parts of ethylene glycol monobutyl ether, 2-10 parts of a corrosion inhibitor, 10-15 parts of sodium polyacrylate, 3-12 parts of salicylic acid, and 20-30 parts of water. Although the patent application prepares a grinding liquid cleaning agent for cleaning the ground metal surface, it only uses aminosulfonic acid as an acid agent for cleaning, resulting in poor cleaning effect and difficulty in cleaning the grinding liquid particles adhering to the metal surface. Summary of the Invention

[0004] The purpose of the present invention is to provide a steel-aluminum composite mirror polishing cleaning agent and a preparation method thereof, to solve the following technical problems:

[0005] Existing mirror polishing agents are easily adsorbed on the surface of the material and are difficult to clean. Commonly used acid and alkali cleaning agents can easily cause surface corrosion of steel-aluminum composite materials, affecting the mirror effect.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A mirror polishing cleaning agent for steel-aluminum composite materials comprises the following raw materials in percentage by weight: 10-20% organic acid, 10-25% surfactant, 5-9% polymer additive, 7-10% complexing agent, 3-5% corrosion inhibitor, 2-5% antistatic adsorbent, 1-2% organic solvent, and the balance is water.

[0008] As a further embodiment of the present invention, the organic acid is one or more of citric acid, sulfonic acid, hydroxyethylidene diphosphonic acid, aminosulfonic acid, and tartaric acid mixed in any ratio.

[0009] As a further embodiment of the present invention: the surfactant is obtained by mixing one or more of secondary alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether, polyoxyethylene alkyl alcohol amide, and alkylphenol polyoxyethylene ether in any ratio.

[0010] As a further solution of the present invention: the complexing agent is one or a mixture of disodium ethylenediaminetetraacetate, maleic acid / acrylic acid copolymer, and sodium ethylenediamine di-o-phenylacetate.

[0011] As a further solution of the present invention: the corrosion inhibitor is hydroxyethylidene diphosphonic acid.

[0012] As a further solution of the present invention: the antistatic adsorbent is one or more of ethanol, isopropyl alcohol, sodium nitrate and urea mixed in any ratio.

[0013] As a further solution of the present invention: the polymer auxiliary agent is potassium sodium tartrate.

[0014] As a further embodiment of the present invention, the organic solvent is one or more of ethylene glycol monobutyl ether, tetrahydrofurfuryl alcohol, propylene glycol methyl ether, and N,N-dimethylformamide mixed in any ratio.

[0015] A method for preparing a mirror-polishing cleaning agent for steel-aluminum composite materials comprises the following steps:

[0016] S1: adding water, organic acid, complexing agent, and polymer additive into a stirring tank in sequence, stirring evenly, and allowing to stand to obtain mixture A;

[0017] S2: adding a surfactant, an antistatic adsorbent, and an organic solvent into a container and stirring them uniformly, then adding a corrosion inhibitor into the container and stirring them uniformly to obtain a mixture B;

[0018] S3: Add the mixture A obtained in step S1 to the mixture B obtained in step S2, mix, heat to 45-50° C., and keep the mixture to react for 15-25 minutes to obtain a mirror polishing cleaning agent.

[0019] Beneficial effects of the present invention:

[0020] (1) The present application adds a complexing agent and an antistatic adsorbent to the cleaning liquid system to increase the complexing property of the cleaning agent with the metal ions on the metal surface, which can thoroughly clean the metal surface, remove rust and oil spots, ensure the cleaning effect, and improve the appearance. At the same time, due to the antistatic agent, the cleaning quality of the product is guaranteed, and the aluminum oxide and silicon oxide adsorbed on the product surface are cleaned and released;

[0021] (2) The present application adds potassium sodium tartrate as a polymer auxiliary agent to the cleaning liquid system, which can stabilize the pH value of the buffer solution and reduce the corrosion effect of the cleaning agent on the metal. At the same time, potassium sodium tartrate can prevent the corrosion of metal parts to a certain extent, and has effects on suspension power, emulsification power and foam stability. After potassium sodium tartrate is dissolved in water, it has good suspension power and stability.

[0022] (3) The present application adds a surfactant to the cleaning liquid system, which has good performance stability, strong decontamination ability, and low corrosion to metal workpieces. It can effectively improve the grade and quality of the product, extend the product life, and ensure the ability to remove oil stains at lower temperatures. It increases the emulsification power of the washing solution and stabilizes the foam, and can also reduce the surface tension and micelle critical concentration of the washing liquid, thereby improving the decontamination effect of the detergent. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] A mirror polishing and cleaning agent for steel-aluminum composite materials comprises the following raw materials: 7 g of citric acid, 10 g of sulfonic acid, 15 g of secondary alcohol polyoxyethylene ether, 8 g of potassium sodium tartrate, 10 g of sodium ethylenediamine di-o-phenylacetate, 3 g of hydroxyethylidene diphosphonic acid, 2 g of isopropyl alcohol, 1 g of N,N-dimethylformamide, and 44 mL of deionized water.

[0026] Example 2

[0027] A mirror polishing and cleaning agent for steel-aluminum composite materials comprises the following raw materials: 8 g of citric acid, 10 g of sulfonic acid, 15 g of secondary alcohol polyoxyethylene ether, 8 g of potassium sodium tartrate, 10 g of sodium ethylenediamine di-o-phenylacetate, 3 g of hydroxyethylidene diphosphonic acid, 2 g of isopropyl alcohol, 1 g of N,N-dimethylformamide, and 43 mL of deionized water.

[0028] Example 3

[0029] A mirror polishing and cleaning agent for steel-aluminum composite materials comprises the following raw materials: 8g of citric acid, 10g of sulfonic acid, 15g of secondary alcohol polyoxyethylene ether, 8g of potassium sodium tartrate, 10g of sodium ethylenediamine di-o-phenylacetate, 3g of hydroxyethylidene diphosphonic acid, 2g of isopropyl alcohol, 2g of N,N-dimethylformamide, and 44mL of deionized water.

[0030] Example 4

[0031] A method for preparing a mirror-polishing cleaning agent for steel-aluminum composite materials comprises the following steps:

[0032] S1: Weigh the raw materials according to the components and proportions in Example 1, add deionized water, citric acid, sulfonic acid, sodium ethylenediamine di-o-phenylacetate, and potassium sodium tartrate into a stirred tank in sequence, stir evenly, and allow to stand to obtain a mixture A;

[0033] S2: Add secondary alcohol polyoxyethylene ether, isopropyl alcohol, and N,N-dimethylformamide to a container and stir evenly, then add hydroxyethylidene diphosphonic acid to the container and stir evenly to obtain a mixture B;

[0034] S3: Add the mixture A obtained in step S1 to the mixture B obtained in step S2, mix, heat to 45°C, and keep the mixture to react for 15 min to obtain a mirror polishing cleaning agent.

[0035] Example 5

[0036] A method for preparing a mirror-polishing cleaning agent for steel-aluminum composite materials comprises the following steps:

[0037] S1: Weigh the raw materials according to the components and proportions in Example 2, add deionized water, citric acid, sulfonic acid, sodium ethylenediamine di-o-phenylacetate, and potassium sodium tartrate into a stirred tank in sequence, stir evenly, and allow to stand to obtain a mixture A;

[0038] S2: Add secondary alcohol polyoxyethylene ether, isopropyl alcohol, and N,N-dimethylformamide to a container and stir evenly, then add hydroxyethylidene diphosphonic acid to the container and stir evenly to obtain a mixture B;

[0039] S3: Add the mixture A obtained in step S1 to the mixture B obtained in step S2, mix, heat to 45°C, and keep the mixture to react for 15 min to obtain a mirror polishing cleaning agent.

[0040] Example 6

[0041] A method for preparing a mirror-polishing cleaning agent for steel-aluminum composite materials comprises the following steps:

[0042] S1: Weigh the raw materials according to the components and proportions in Example 3, add deionized water, citric acid, sulfonic acid, sodium ethylenediamine di-o-phenylacetate, and potassium sodium tartrate into a stirred tank in sequence, stir evenly, and allow to stand to obtain a mixture A;

[0043] S2: Add secondary alcohol polyoxyethylene ether, isopropyl alcohol, and N,N-dimethylformamide to a container and stir evenly, then add hydroxyethylidene diphosphonic acid to the container and stir evenly to obtain a mixture B;

[0044] S3: Add the mixture A obtained in step S1 to the mixture B obtained in step S2, mix, heat to 45°C, and keep the mixture to react for 15 min to obtain a mirror polishing cleaning agent.

[0045] Comparative Example 1

[0046] A mirror polishing and cleaning agent for steel-aluminum composite materials comprises the following raw materials: 7 g of citric acid, 10 g of sulfonic acid, 15 g of secondary alcohol polyoxyethylene ether, 8 g of potassium sodium tartrate, 3 g of hydroxyethylidene diphosphonic acid, 2 g of isopropyl alcohol, 1 g of N,N-dimethylformamide, and 54 mL of deionized water.

[0047] Comparative Example 2

[0048] A mirror polishing and cleaning agent for steel-aluminum composite materials comprises the following raw materials: 7 g of citric acid, 10 g of sulfonic acid, 15 g of secondary alcohol polyoxyethylene ether, 8 g of potassium sodium tartrate, 10 g of sodium ethylenediamine di-o-phenylacetate, 3 g of hydroxyethylidene diphosphonic acid, 1 g of N,N-dimethylformamide, and 46 mL of deionized water.

[0049] Comparative Example 3

[0050] A mirror polishing and cleaning agent for steel-aluminum composite materials comprises the following raw materials: 7 g of citric acid, 10 g of sulfonic acid, 15 g of secondary alcohol polyoxyethylene ether, 8 g of potassium sodium tartrate, 3 g of hydroxyethylidene diphosphonic acid, 1 g of N,N-dimethylformamide, and 56 mL of deionized water.

[0051] Comparative Example 4

[0052] A mirror polishing and cleaning agent for steel-aluminum composite materials comprises the following raw materials: 7 g of citric acid, 10 g of sulfonic acid, 15 g of secondary alcohol polyoxyethylene ether, 10 g of sodium ethylenediamine di-o-phenylacetate, 3 g of hydroxyethylidene diphosphonic acid, 2 g of isopropyl alcohol, 1 g of N,N-dimethylformamide, and 52 mL of deionized water.

[0053] Comparative Example 5

[0054] Compared with Example 4, only the components and proportions in Example 1 were replaced by those in Comparative Example 1, and the remaining steps were exactly the same as in Example 4.

[0055] Comparative Example 6

[0056] Compared with Example 4, only the components and proportions in Example 1 are replaced by those in Comparative Example 2, and the remaining steps are exactly the same as those in Example 4.

[0057] Comparative Example 7

[0058] Compared with Example 4, only the components and proportions in Example 1 are replaced by the components and proportions in Comparative Example 3, and the remaining steps are completely consistent with Example 4.

[0059] Comparative Example 8

[0060] Compared with Example 4, only the components and proportions in Example 1 are replaced by those in Comparative Example 4, and the remaining steps are exactly the same as those in Example 4.

[0061] Performance testing

[0062] The cleaning agents prepared in Examples 4-6 and Comparative Examples 5-8 were tested for stability (0°C, 45°C), pollutant cleaning rate, and surface roughness. The test results are shown in Table 1.

[0063] Table 1: Performance test data of cleaning agents for Examples 4-6 and Comparative Examples 5-8

[0064]

[0065] As can be seen from Table 1, the cleaning agent prepared in the present application has an excellent cleaning effect on the abrasive remaining on the mirror surface, and has good storage stability. The mirror surface after cleaning still has excellent smoothness.

[0066] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A mirror polishing and cleaning agent for steel-aluminum composite materials, characterized in that: The cleaning agent comprises the following raw materials in weight percentage: 10-20% organic acid, 10-25% surfactant, 5-9% polymer additive, 7-10% complexing agent, 3-5% corrosion inhibitor, 2-5% antistatic adsorbent, 1-2% organic solvent, and the balance is water; The polymer auxiliary agent is potassium sodium tartrate; The method for preparing the steel-aluminum composite material mirror polishing and cleaning agent comprises the following steps: S1: adding water, organic acid, complexing agent, and polymer additive into a stirring tank in sequence, stirring evenly, and allowing to stand to obtain mixture A; S2: adding a surfactant, an antistatic adsorbent, and an organic solvent into a container and stirring them uniformly, then adding a corrosion inhibitor into the container and stirring them uniformly to obtain a mixture B; S3: Add the mixture A obtained in step S1 to the mixture B obtained in step S2, mix them, raise the temperature to 45-50°C, and keep the temperature to react for 15-25 minutes to obtain a mirror polishing cleaning agent.

2. The mirror polishing and cleaning agent for steel-aluminum composite materials according to claim 1, characterized in that: The organic acid is one or more of citric acid, sulfonic acid, hydroxyethylidene diphosphonic acid, aminosulfonic acid and tartaric acid mixed in any ratio.

3. The mirror polishing and cleaning agent for steel-aluminum composite materials according to claim 1, characterized in that: The surfactant is obtained by mixing one or more of secondary alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether, polyoxyethylene alkyl alcohol amide and alkylphenol polyoxyethylene ether in any ratio.

4. The mirror polishing and cleaning agent for steel-aluminum composite materials according to claim 1, characterized in that: The complexing agent is one of disodium ethylenediaminetetraacetate, maleic acid / acrylic acid copolymer, and sodium ethylenediamine di-o-phenylacetate, or a mixture of several of the above.

5. The mirror polishing and cleaning agent for steel-aluminum composite materials according to claim 1, characterized in that: The corrosion inhibitor is hydroxyethylidene diphosphonic acid.

6. The mirror polishing and cleaning agent for steel-aluminum composite materials according to claim 1, characterized in that: The antistatic adsorbent is one or more of ethanol, isopropyl alcohol, sodium nitrate and urea mixed in any ratio.

7. The mirror polishing and cleaning agent for steel-aluminum composite materials according to claim 1, characterized in that: The organic solvent is one or more of ethylene glycol monobutyl ether, tetrahydrofurfuryl alcohol, propylene glycol methyl ether, and N,N-dimethylformamide mixed in any ratio.

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